Responder:
<em>a) 1
</em>
<em>b) 12
</em>
<em>c) 3
</em>
<em>d) -1 y 3
</em>
Explicación paso a paso:
Dadas las siguientes ecuaciones;
a) x²-x =0
x² = 0+x
x² = x
x = 1
b) -x²+12x = 0
-x² = -12x
x² = 12x
x = 12
c) 3x² - 9x = 0
Suma 9x a ambos lados
3x²-9x+9x = 0+9x
3x² = 9x
3x = 9
x = 9/3
x = 3
d) x²-2x-3 = 0
x²-3x+x-3 = 0
x(x-3)+1(x-3) = 0
(x+1)(x-3) = 0
x+1 = 0 y x-3 = 0
x = -1 y 3
Answer:
The mirror has a vertical orientation and is 5.4 ft tall.
Step-by-step explanation:
Took the test
Step-by-step explanation:
the equation is -5^2-4
this is because we substitute the variables for the numbers given!
Answer:
Step-by-step explanation:
Let's write the equation of the line in the slope-intercept form. That is, y= mx +c, where m is the slope and c is the y-intercept.
Identify 2 coordinates on the line to calculate the slope.
The 2 points are (1, 2) and (4, 4).
Slope
=
=
Substitute the value of the slope into m:
Substitute any point into the equation to find c:
When x= 1, y= 2,
Solve for c:
c=
Thus, the equation that represents the line is .
Additional:
Should you wish to learn more about slope-intercept form, do check out the following!